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- def neighbors(x, y):
- return [(x + 1, y), (x + 1, y + 1),(x, y + 1),(x - 1, y + 1),(x + 1, y - 1),(x - 1, y - 1),(x - 1, y ),(x, y - 1)]
- input()
- my = {(x, y): int(v) for y in range(int(input())) for x, v in enumerate(input().split())}
- for c in my:
- if my[c] == 0:
- for j in neighbors(*c):
- if my.get(j,1) == 0:
- break
- else:
- print(f"{x} {y}")
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